1252116 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種注射器，特別是指一種注射後可 使針體縮移至注射筒内部的安全注射器。 【先前技術】 …如圖1、圖2所示’為現有—種安全注射器（申請案 號第87219129 _申譜索、甘— "" 丄z y就曱明案），其包含有一注射筒工、 —裝設在該注射筒！内部的卡合座2、—與該卡合座^累 ίο 15 接定位的針頭組3及—可在注射筒i中產生推移的推桿 4。該注射筒i内部具有一容納室1〇1、一與該容納室⑻ 相通且呈收束狀的前端孔1〇2及一介於該容納室⑻與前 端孔1〇2之間的肩部1〇3。該卡合座2具有一可抵止定位 在該肩部1〇3上的盤座201、—沿軸線凸設在該盤座201 一側面上的圓筒部搬及一可套設在該圓筒部搬上的〇 型環203，該圓筒部2〇2内環面一端部朝轴線凸設有一凸 緣2〇4，另一端部則設有一螺紋部205。該針頭組3具有 -可螺設在該螺紋部2〇5上的針座3〇1及一固設在該針座 3〇1内部的針體302。該推桿4具有—可供操作之桿部 401、一設置在該桿部4〇1上且可氣密地套設在容納室 中的活基402及-設於該活塞4〇2外側且可適時越過該凸 緣204而與卡合座2互相連結的榫頭403，該榫頭403中 央沿轴線開設有-缺槽4〇4，促使該禅頭4〇3具有可被壓 縮且釋放壓制力後可自動彈開之特性。 當該卡合座2自容納室101之開口套入，且圓筒部2〇2 20 1252116 &而孔1 2中、盤座2 01抵止在肩部1 〇 3時，即可利 用推# 4插人容納室m中並對卡合座2產生抵止（但梓 頭403並不能越過凸緣2〇4)，促使卡合座2獲得定位，再 將針頭組3之針座3〇1自注射筒丨之前端孔1〇2外部螺入 於該卡合座2之螺紋部205巾，即完成組配之操作。 雖然’上迹的注射器可達到預期的使用目的，但在製 造、組配時卻有以下的缺失： 、 卡。座2與〇型環203為二個構件，必須利用兩 10 部機器製造生產’並且需要再行組裝，會增加製造組配的 成本0 15 一、尘裱2〇3之體積小，若以人工組裝相當不容易， 若以機器組裝’則因◦型環2G3本身具有彈性，所以在組 -t很夺易產生跳脫，而造成不良率高，且◦型環2〇3 一 旦跳脫而卡止在操作機器上時，就必須停機進行維修。 “三、組装時必須利用推桿4插入注射筒！之容納室1〇1 順=:2 2抵止定位，才能使得卡合座2與針頭組3 、”口、'结，組t之操作相當麻煩且產能無法提昇。 構件=:0型環2〇3套設在卡合座2上，會使整體的 窄在=〜、夕，且為了使榫頭4G3順利越過凸緣204,必 、榫碩彻中央開設缺槽姻，結構上也較為複雜。 針座在組裝時必須使卡合座2與 2之螺^目轉動’才能使針座301順利螺入卡合座 之累'Ό205中，在操作上稍嫌麻須。 20 1252116 【發明内容】 F“因此’本發明之主要目的，即在提供-種組裝容易、 =注=機器組裝時亦可防止構件彈脫以提昇產能之 本發明之另一目的，gp力:接彳i£ ^ A+、加士 Θ即在^供―種可使針體内縮於注 射同内#，利用卡合座單元之設計而導致針體 偏斜以防止針體外露之安全注射器。 本發明之又一目的，g太埕 ίο 15 與針頭單元互相一，且=!使該卡合座單元 车广 口 叮達到減少構件數目及減少組配 私序之安全注射器。 射明安全注射器，包含有一注射筒、-襄設在該注 =部的卡合座單元、-嵌卡固定在該卡合料元中的 一可推移地插設在該注射筒内部的推桿。該注 、同-、圍繞一轴線並可界定出一宏$ > & # 接在該筒部其中1部且二”㈣及―固 部具有-可與容室相通且：束該束管部内 7丨命、 /、有較小孔徑之—貫孔，且該貫 孔呈：Γϋ產生一抵止部。該卡合座單元是自與該貫 止立 u | ^ 1=71人該注射筒内部且定位在該抵 上㈣件及—直接成型並固設在該套筒件 盘二 4套同件具有―圍繞軸線所產生的外周面及 二：面呈相背設置的内環面，該内環面具有-對應 第二朝軸線凸出的第一卡合部、一對應於貫孔而設於 呆一卡合部一側且相對於 w _ 七 、弟卡5 σ卩較遠離於軸線的容 置心該密封件是以具可塑彈性之材質製成，並固設在該 20 1252116 套筒件之外周面上，且該密封 饩杜冰田 山才件之一外徑大於所對應之套 ； ❸卜徑。該針頭單元具有—針座及-固設在兮 的針體，座是連結定位在該卡合座單元的套 ⑽上。該推桿是插設在該注射筒之容室中，具有―可供 才％作之桿部、一兮§·晉:兮妾曰如 — σ在忒#邛上且可氣密地套設在容室中 白勺 >舌基及一fO- ^ Sr AL 7 ϊ 亥/舌基外側且可適時越過該第一卡合部 而卡止定位在容置部中的榫 趨近嗜卡人^…減该推桿沿轴線推移 利用該榫頭可使推桿與該卡 元達到卡合連έ士目的。里从 口 早 ι〇 15 2〇 的料，該卡合座單元亦可與針頭單 元互相結合，並呈有一垄々τ貝早 同件、一直接成型並固設在該套 搶封件及-與該套筒件-體成型的針座，該套筒 件具有一圍繞轴線所產生 生的外周面及—與該外周面呈相 ::::内壤面，該内環面具有-對應於容室且朝軸線凸 : = 及—設於卡合部一側且相對於卡合部較遠離 ;由各的谷置部’該密封件是以具可塑彈性之材質， 並固設在該㈣件之外周面上，且該密封件之—外徑大於 所對應之套筒件外周面的外徑，且使—針體固設在該卡人 座單元之針座巾’並可凸伸至該㈣件外部。 σ 【實施方式】 有關本發明之Μ述及其他技術内容、特點與功效，在 以下配合參考圖式之數較佳實施例的詳細說明中 楚的明白。 月 如圖3圖4、圖5所示，本發明安全注射哭 較佳實施例包含有-注射〜Ω 主射同10、一裝設在該注射筒10内 1252116 々卡口座早兀20、-嵌卡固定在該卡合座單元20申的 4Λ項單元3〇及一可推移地插設在該注射筒内部的推桿 4 0 〇 5 10 15 、，該注射筒10製成中空圓筒狀，具有—圍繞一轴線L ° "疋出谷至1 π之筒部i J及一固接在該筒部u 1 中-端部且呈收束狀的束管部12，該束管部12内部具有 -可與容室111相通且具有較小隸之—貫孔⑵，且該 貫孔m與容tlll浦處產生—抵止部13及一環槽14。 該卡合座單元20製成階級中空柱狀，是自與該貫孔 ⑵呈相反之該容室m—開口裝入該注射筒1〇内部，並 具有一套筒件21及-直接成型並固設在該套筒件21上的 猶封件22。該套筒件21具有—以硬質塑膠材質（本實施 :可採用簡稱PP之聚丙婦材質）製成的外套體23及一固 没在該外套體23内部且以具可塑彈性之材質（本實施例 可採用橡膠材質）製成的内套體24，該外套體23具有一 I抵止在該抵止部13上的盤部231、—凸設在該盤部231 一侧面且具有較小圓徑之圓管部232、一圍繞軸線L並對 應該盤部231的外周S 233及一與該外周φ 233呈相背設 置的内周面234,該盤部231設有數沿徑向延伸的流道235 及數介於該等流道235之間的支撐塊236。該内套體以是 經由流道235的導通而由密封件22朝内延伸—體成型， 亚具有一圍繞軸線L所形成的内環面241，該内環面241 具有一鄰近於容室U1且朝軸線L凸出的第一卡合部 242、一與該第一卡合部242相反設置且亦朝軸線l凸出 20 1252116 勺勺第一卡口部243、一介於該第一、二卡合部242、243 之間且較遠離於軸線L的容置部244、一設在第一卡合部 242與容置部244銜接處的抵止肩部245及一鄰近於容室 111且σ又於该第一卡合部242 一側的導引部2扣，該導引 口 Ρ 246王錐孔狀。該密封件22是以具可塑彈性之材質製 成（本實施例為橡膠），並直接灌注在外套體23之盤部231 ^，且利用流道235導通而可與盤部23丨、内套體24產生 f佳固結效果，且利用支撐塊236可使内套體24具有較 佳之定位性。而其一外環部可凸設在該外周面2犯上，而 一内環部則與内套體24連結成一體，且該密封件Μ之一 外徑D大於所對應之外套體23的外周面233的外徑d。 該針頭單兀30具有一針座31、一固設在該針座W内 部的針體32及一套設在該針座31上且可罩設在針體32 外部的蓋體33。該針座31外周面具有—可插人貫孔i2i 且越過弟二卡合部243並連結定位容置部244中的連結部 311及一可抵止在圓管部232之外端面上且可供蓋體u抵 止定位的卡環312。 該推桿40是插設在該注射筒1〇之容室lu中，具有 —可供操作之桿部4卜-設置在該桿部41 —側端部且可 氣密地套設在容室1U中的活塞42及一設於該活塞“外 侧且可適時越過該第一卡合部242而卡止定位在容置部 244中的榫頭43。該榫頭43的最小外徑處亦大於該第一 卡合部242所構成之内徑’且利用該内套體24之材質特 性’當榫頭43穿過第_卡合部242後，可與卡合座單元 10 1252116 20達到穩固連結目的。 部组配時，可先將該針頭單…連結 内套體24 …0之圓管部232端口插入，並利用 5 10 15 20 並越過該第二特性，使得連結部311报容易即可迫撐 元20連15= 243’ϋ針頭單“可與卡合座單 ㈣的: 接著，再將卡合鱗元別及已罩設蓋 入U 單元30自容室111開口端套入而使得整财 入注射筒1G中’並 12卜當密封件22山^ ^33的方向對準貫孔 在 ：2敗套在該劃内部且盤部231抵止 定位二二則該卡合座單元2。、釺頭單元3。即可 及榫頭43$ ^，只須再將推桿4G設有活塞42 :Μ之—端插入容室⑴中，即可完成組配，且上 二：：可利用機器自動化操作組裝，且 與套筒件21分離之虞。 卫…、 射完畢且欲拖棄之前’操作 桿㈣注射筒10内部推移，利用内套 _;人性，可使榫頭43絲^撐並_該第-愈卡卡合=’/2使榫頭43落入容置物中，推桿二 Γ 早0達到連結目的。再如圖7所示，當將推 干40朝向注射筒1{)外部拉動時，推桿⑼即可帶動卡入 料元2G及針頭單元3G朝注射内部產生縮移，: ::32、蓋體33都已藏入注射筒!。中時 #4〇,則可確保針體32無外露㈣傷人體的危險。 因此，本發明第一實施例之注射器，具有以下之優點： 11 1252116 一、密封件22與套筒件21直接成型在同_ ， 利用同一部機哭;生，g 了 $ 配…需要再行組裝，可降低製造組 配的成本。 密封件22是直接成型在套筒件21上所以沒有組 配的問題，更可節省人 4 、、 敕 、'且衣的成本，且可利用機器進行 整體組配之操作，則密封件22不會產生跳脫，不良率低， 機為如機的機率也較低，可提昇生產效率。 ίο 15 20 社成三麟組Γ寺，預先將卡合座單元2〇及針頭單元30連 成一肢’再將卡合座單元20及針頭u3Q置入注射筒 10中直到定位，組裝之操作 — ° 能可以大大地提昇，、…，且組裝速度快、產 四在封件22直接成型在套筒件21上，可以^化 件，且利用内套體2 4之材質特性，榫頭4 3 二 槽，結構上也較為簡單，並 二“又、 以同一操作動作完成組裝作業。料同—時間’ 支二3=Γ’以聚丙稀材質製成的外套體23及 橡膠材f製成之内套體2心密封 t ϋ推桿4G之榫頭43與卡合料元2〇進行嵌套 日r可達到穩固結合及緊迫的束緊目的。 一剛所示，本發明安全注射器之第二實施例 一貫施例大致相同，其差異處在於： 〇、 内套體24,内環面241，更呈 厂早兀20之 容置部244，$ /、 ；ί於該第一卡合部242,與 且呈傾斜狀之傾斜肩咖 有—圍繞-斜軸線L，所產生的斜謂，，該斜 12 12521161252116 发明, DESCRIPTION OF THE INVENTION: FIELD OF THE INVENTION The present invention relates to a syringe, and more particularly to a safety syringe that can retract a needle into the interior of a syringe after injection. [Prior Art] ... as shown in Figure 1 and Figure 2, 'is a safety syringe (application No. 87219129 _Shen Pei, Gan-"" 丄zy on the case), which contains a syringe Work, install in the syringe! The inner engaging seat 2, the needle set 3 and the positioning seated with the engaging seat, can produce a pusher 4 that is displaced in the syringe i. The inside of the syringe i has a receiving chamber 1〇1, a front end hole 1〇2 communicating with the receiving chamber (8) and being bundled, and a shoulder 1 interposed between the receiving chamber (8) and the front end hole 1〇2. 〇 3. The card holder 2 has a disk holder 201 that can be positioned on the shoulder portion 1-3, a cylindrical portion that is protruded from the axis on one side of the disk holder 201, and a sleeve that can be placed in the circle The 〇-shaped ring 203 is carried by the tubular portion. One end of the inner surface of the annular portion of the cylindrical portion 2〇2 is convexly provided with a flange 2〇4, and the other end portion is provided with a threaded portion 205. The needle set 3 has a needle hub 3〇1 which is screwed onto the threaded portion 2〇5 and a needle body 302 which is fixed inside the needle hub 3〇1. The push rod 4 has an operable rod portion 401, a living base 402 disposed on the rod portion 4〇1 and hermetically sleeved in the receiving chamber, and disposed outside the piston 4〇2 The boring head 403 can be connected to the engaging seat 2 in a timely manner over the flange 204. The center of the boring head 403 is provided with a sagged groove 4〇4 along the axis, so that the zen head 4〇3 can be compressed and release the pressing force. After the feature can be automatically bounced off. When the engaging seat 2 is nested from the opening of the accommodating chamber 101, and the cylindrical portion 2 〇 2 20 1252116 & and the hole 1 2 and the disk holder 2 01 are pressed against the shoulder 1 〇 3, the push can be utilized #4 inserted into the accommodating chamber m and abuts the engaging seat 2 (but the hoe 403 does not pass over the flange 2〇4), causing the engaging seat 2 to be positioned, and then the needle holder 3 of the needle set 3 is 〇 1 The outer end hole 1〇2 is screwed into the threaded portion 205 of the engaging seat 2 from the front end of the syringe barrel, that is, the assembly operation is completed. Although the above-mentioned syringe can achieve the intended purpose of use, it has the following defects in manufacturing and assembly: The seat 2 and the 〇-shaped ring 203 are two members, which must be manufactured by two 10 machines and need to be assembled again, which will increase the cost of the manufacturing assembly. 0 15 1. The volume of the dust mites 2 〇 3 is small, if artificial Assembly is not easy. If it is assembled by machine, the 2G3 itself has elasticity, so the group-t is easy to jump, resulting in high defect rate, and the ◦-type ring 2〇3 once it jumps off and the card When the machine is operated, it must be shut down for repair. "3. When assembling, you must use the push rod 4 to insert the syringe! The accommodation chamber 1〇1 顺=:2 2 resists positioning, so that the engagement seat 2 and the needle group 3, "mouth," knot, group t The operation is quite cumbersome and the production capacity cannot be improved. Component =: 0 type ring 2〇3 set on the engaging seat 2, the whole narrowness is ==, 夕, and in order to make the hoe 4G3 smoothly pass over the flange 204, the 中央 榫 彻 中央 开设 开设 开设The structure is also more complicated. When the needle holder is assembled, the engaging seats 2 and 2 must be rotated to make the needle holder 301 smoothly screw into the engaging portion 205 of the engaging seat, which is slightly annoying in operation. 20 1252116 SUMMARY OF THE INVENTION F "Therefore, the main object of the present invention is to provide an object of ease of assembly, = injection = machine assembly, to prevent the member from being bounced off to enhance productivity, another object of the invention, gp force:彳i£ ^ A+, Cascade is a kind of safety syringe that can make the needle body deflected to prevent the needle from being exposed outside the body by using the design of the engagement seat unit. According to still another object of the present invention, g is too ί 15 15 and the needle unit are mutually coupled, and =! the card seat unit is wide-mouthed to achieve a safety syringe that reduces the number of components and reduces the arrangement of the private sequence. The utility model comprises a syringe, a snap seat unit disposed at the note portion, and a push rod fixedly inserted into the snap element and inserted inside the syringe. -, around an axis and can define a macro $ > &#; in the barrel of one of the two and two "four" and "solid part has - can communicate with the chamber and: bundle 7 of the bundle The life, /, has a smaller aperture - the through hole, and the through hole is: Γϋ produces an abutment. The card holder unit is self-contained with the end of the cylinder | ^ 1 = 71 people inside the syringe and positioned on the abutting (four) and - directly formed and fixed on the sleeve member disk two sets of the same piece has ― an outer circumferential surface formed around the axis and two: an inner annular surface disposed opposite to each other, the inner annular surface having a first engaging portion corresponding to the second axial direction and one corresponding to the through hole The sealing member is made of a plastically elastic material on one side of the engaging portion and opposite to the w_7, and the card 5 σ卩 is far away from the axis, and is fixed on the 20 1252116 sleeve member. On the outer peripheral surface, and one of the outer diameters of the sealed 饩Dubingtian mountain member is larger than the corresponding sleeve; The needle unit has a needle holder and a needle body fixed to the cymbal, and the seat is coupled to the sleeve (10) of the engagement seat unit. The push rod is inserted into the chamber of the syringe, and has a rod portion that can be used as a part, a 兮 · 晋 兮妾曰 兮妾曰 — 且 邛 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且In the chamber, the tongue base and a fO-^Sr AL 7 亥hai/tongue base and can pass over the first engaging portion in time to lock the squat in the accommodating portion ^...minus the push rod to move along the axis. The hoe can be used to make the push rod and the card element reach the goal of the gentleman. From the mouth 〇 〇 15 2 〇 material, the card seat unit can also be combined with the needle unit, and has a ridge 々 贝 早 早 早 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , a sleeve formed integrally with the sleeve member, the sleeve member having an outer peripheral surface generated around the axis and - forming a phase with the outer peripheral surface:::: inner soil surface, the inner annular surface having a corresponding The chamber is convex toward the axis: = and - is disposed on one side of the engaging portion and is farther away from the engaging portion; the sealing member is made of a plastic elastic material and is fixed thereto (4) on the outer peripheral surface of the member, and the outer diameter of the sealing member is larger than the outer diameter of the outer peripheral surface of the corresponding sleeve member, and the needle body is fixed to the needle seat of the card holder unit and can be protruded To the outside of the (four) pieces. [Embodiment] The detailed description of the preferred embodiments of the present invention will be understood by reference to the accompanying drawings. As shown in FIG. 3, FIG. 4 and FIG. 5, the preferred embodiment of the safe injection crying of the present invention comprises: - injection ~ Ω main shot with 10, one installed in the syringe 10, 1252116, bayonet seat early 兀 20, - The inserting card is fixed to the engaging unit unit 20 of the engaging unit 20 and a push rod 4 0 〇 5 10 15 that is movably inserted into the inside of the syringe, and the syringe 10 is formed into a hollow cylindrical shape. , having a tubular portion i J surrounding an axis L ° " 疋出谷至1 π and a bundle tube portion 12 fixed in the end portion of the cylindrical portion u 1 and in a bundled shape, the bundle tube portion The inside of the 12 has - can communicate with the chamber 111 and has a smaller through hole (2), and the through hole m and the reservoir 11 are formed - the abutting portion 13 and the annular groove 14. The card holder unit 20 is formed into a hollow column shape, and is opposite to the through hole (2). The chamber m is opened into the inside of the syringe 1 and has a sleeve member 21 and is directly formed and The yoke 22 is fixed to the sleeve member 21. The sleeve member 21 has an outer casing 23 made of a hard plastic material (this embodiment: a polypropylene material which can be abbreviated as PP) and a material which is fixed inside the outer casing 23 and has a plastic elasticity (this embodiment) For example, an inner sleeve body 24 made of a rubber material may be used. The outer sleeve body 23 has a disk portion 231 that abuts against the abutting portion 13 and protrudes from a side of the disk portion 231 and has a small circle. The circular tube portion 232, an outer circumference S 233 surrounding the axis L and the disk portion 231, and an inner circumferential surface 234 disposed opposite to the outer circumference φ 233, the disk portion 231 is provided with a plurality of radially extending flows A track 235 and a number of support blocks 236 between the runners 235. The inner sleeve body is formed by inwardly extending from the sealing member 22 via the flow passage 235, and has an inner annular surface 241 formed around the axis L. The inner annular surface 241 has a proximity to the chamber U1. And the first engaging portion 242 protruding toward the axis L, and the first engaging portion 242 opposite to the first engaging portion 242 and also protruding toward the axis l 20 1252116 scooping the first bayonet portion 243, one between the first and second a receiving portion 244 between the engaging portions 242, 243 and away from the axis L, a resisting shoulder portion 245 disposed at the junction of the first engaging portion 242 and the receiving portion 244, and a portion adjacent to the chamber 111 The σ is further buckled on the guiding portion 2 on the side of the first engaging portion 242, and the guiding opening 246 is in the shape of a cone. The sealing member 22 is made of a material having plasticity and elasticity (in this embodiment, rubber), and is directly poured into the disk portion 231 of the outer casing 23, and is electrically connected to the disk portion 23 by the flow passage 235. The body 24 produces a good consolidation effect, and the support block 236 allows the inner casing 24 to have better positioning. An outer ring portion can be protruded from the outer peripheral surface 2, and an inner ring portion is integrally coupled with the inner sleeve body 24, and an outer diameter D of the seal member is larger than the outer circumference of the corresponding outer sleeve body 23. The outer diameter d of the face 233. The needle unit 30 has a needle holder 31, a needle body 32 fixed to the inner portion of the needle holder W, and a cover body 33 provided on the needle holder 31 and covering the outside of the needle body 32. The outer peripheral surface of the needle holder 31 has a through-hole through-hole i2i and passes over the second engaging portion 243 and connects the connecting portion 311 in the positioning and receiving portion 244 and abuts against the outer end surface of the circular tube portion 232 and can be A snap ring 312 for the positioning of the cover u. The push rod 40 is inserted into the chamber lu of the syringe 1b, has a handleable portion 4 disposed at the side end of the rod portion 41 and is airtightly sleeved in the chamber The piston 42 in the 1U and the boring head 43 disposed on the outer side of the piston and passing over the first engaging portion 242 to lock in the accommodating portion 244. The minimum outer diameter of the ram 43 is also larger than the first portion The inner diameter ' formed by the one engaging portion 242 and the material property of the inner sleeve body 24' can be stably connected to the engaging seat unit 10 1252116 20 after the boring head 43 passes through the first engaging portion 242. When assembling, the needle can be inserted into the port of the round tube portion 232 of the inner sleeve 24 ... 0, and the 5 10 15 20 is used and the second characteristic is passed, so that the joint portion 311 can be easily reported. 20 even 15 = 243' ϋ 单 单 “ 可 可 可 可 可 可 可 可 可 可 可 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着 接着In the syringe 1G, the direction of the sealing member 22 is the same as that of the through hole: 2 is in the inside of the stroke and the disk portion 231 is in the position of the second and second. Seat unit 2. , Shantou unit 3. It can be used with the hoe head 43$ ^, and the push rod 4G only needs to be provided with the piston 42: the end of the shank is inserted into the chamber (1), and the assembly can be completed, and the second two: can be assembled by using the machine automation, and The sleeve member 21 is separated. Wei..., the shot is finished and wants to abandon the previous 'operation lever (four) syringe 10 internal shift, using the inner sleeve _; human nature, can make the hoe 43 wire ^ _ and the first - more khaki = ' /2 make the hoe 43 Dropped into the container, the putter two 早 early 0 to achieve the purpose of the connection. As shown in FIG. 7, when the push-drying 40 is pulled toward the outside of the syringe 1{), the push rod (9) can drive the snap-in element 2G and the needle unit 3G to cause a contraction toward the inside of the injection: ::32, cover Body 33 has been hidden in the syringe! When the middle time #4〇, it can ensure that the needle body 32 has no exposure (4) the danger of injuring the human body. Therefore, the syringe of the first embodiment of the present invention has the following advantages: 11 1252116 1. The sealing member 22 and the sleeve member 21 are directly formed in the same _, using the same machine to cry; raw, g has a match... need to go again Assembly can reduce the cost of manufacturing assembly. The sealing member 22 is directly formed on the sleeve member 21, so there is no problem of assembly, and the cost of the person 4, the 敕, and the clothing can be saved, and the operation of the overall assembly can be performed by the machine, and the sealing member 22 does not There will be trips, the non-performing rate is low, and the probability of the machine being as good as the machine is also low, which can improve production efficiency. Ίο 15 20 社成三麟组Γ寺, the card seat unit 2〇 and the needle unit 30 are connected in advance to form a limb', and then the card seat unit 20 and the needle u3Q are placed in the syringe 10 until positioning, assembly operation- ° can be greatly improved, ..., and the assembly speed is fast, the production four is directly formed on the sleeve member 21 in the sealing member 22, and the material can be used, and the material characteristics of the inner sleeve body 24 are utilized, and the head 4 3 The groove is also relatively simple in structure, and the second is to complete the assembly operation by the same operation. The same time - the time 'branch 2 3 = Γ' is made of the outer casing 23 and the rubber material f made of polypropylene material. The second embodiment of the safety syringe of the present invention is shown in the first embodiment of the present invention. The first embodiment of the present invention provides a second embodiment of the safety syringe of the present invention. The consistent application is roughly the same, and the difference lies in: 〇, inner sleeve body 24, inner ring surface 241, and further the arranging portion 244 of the factory early 20, $ /, ; ί in the first engaging portion 242, and And the inclined shoulder coffee has a surrounding - oblique axis L, the resulting oblique angle, the oblique 12 1252116
軸線L’與該軸線L 245,垂直相交。如3^二十度，且斜軸線L，與傾斜肩部 在該卡合座單元二:示，當推桿一 對内套體％產生單：：斜孔㈣ 22,受套注射〜1n 卜擠麼的作用，同時，因密封件 1〇 的約束限制，則當操作推桿40朝注射筒The axis L' intersects the axis L 245 perpendicularly. For example, 3^20 degrees, and the oblique axis L, and the inclined shoulder in the engaging seat unit two: show that when the pair of push rods produce a single:: oblique hole (four) 22, the sleeve is injected ~1n The effect of the squeeze, at the same time, due to the constraint of the seal 1〇, when the push rod 40 is operated toward the syringe
10外部移動時（可. 别/身iR 星力釋除，又利用内套:，原來單側向外擠壓的 套體24,的材質特性及斜孔247,、傾 ίο 15 20 =32^注射筒1Q内部時，其整體會產生偏斜（此時 ^孔427 榫頭43的擠壓作用會變形並被榫頭43塑 =且使針體32末梢可抵止在抵止部13上，再折斷推 才干40,即可確保至針體32無外㈣危險。 又如圖1 0所示，本發明安全注射器之第三實施例， j含有-注射筒UP—裝設在該注射筒1Q，，内部的卡合 座早元2〇”、一固設在該卡合座單λ 20”中的針體30”及一 :推移地插設在該注射筒1。，，内部的推桿40”。其中該注射 门1〇、推# 40與第一實施例之構造完全相同，故不再贅 述，以下僅針對卡合座單元2〇”及針體3〇，，敘述： _该卡合座單元20”具有一套筒件21，，、一直接成型並固 叹在邊套筒件21，’上的密封件22，，及一與該套筒件21”一體 成型的針座25”。該套筒件21，，具有一以硬質塑膠材質製成 的外套體23及一固設在該外套體23”内部且以具可塑彈 性之材質製成的内套體24”，該外套體23”具有一可抵止在 忒抵止部13”上的盤部231”、一凸設在該盤部231”一側面 13 1252116 ίο 15 20 且具有較小圓徑之圓管部232，，、—圍繞轴線L並對應該盤 部灿’的外周面233”及-與該外周面如，，呈相背設置的 内周面234”，該盤部231，，沿徑向預設有數流道挪”。該 内套體24”具有一圍繞軸、線[所形成的内環面241”，該内 環面241”具有—鄰近於容室⑴，，且朝軸線L凸出的卡合部 242’’、-設於卡合部242’，—側且相對於卡合部242”較遠離 於軸線L的容置部244”。該密封件22，，是以橡膠材質製成， 亚直接社在流道235，，中而其—外環料凸設在該外周 2 233”上，而一内環部則與内套體24，，連結成一體，且該 密封件22”之外徑大於所對應之外套體23，，的外周面挪” 的外輕。 。亥針to 30疋直接固設在該卡合座單元之針座25，， 中，且可凸伸至該注射筒10，,外部。 口此本發明第三實施例是將套筒件21”、密封件22” 及針座25”製成一體，不僅可減少構件數量，且可減少製 造、組配的麻煩，且組裝時只須將針體3G,，插固在針座25” 7 成組裝’在操作上相當容易。且與現有注射器相 見有之主射☆針座需與卡合座相對轉動才能螺合連 、°本^明確貫已達到減化構件、組裝程序之目的。 士圖1 1所不，本發明第四實施例，與第三實施例 大致相同，其差異處在於：該卡合座單元50之内套體54 内環面541也具有—介於該卡合部542與容置部544之間 且呈傾斜狀之傾斜启邱 、計眉邛545 ,該卡合部542十設有一圍繞 一斜軸線L’所產生的| u Γ ^ d 勺牙斗孔547,且斜軸線L，與傾斜肩部545 14 1252116 垂直相交。當卡合座單元50與針體60縮入注射筒内部 時，亦可確保針體60無外露的危險（類似圖9之狀幻。 歸納上述，本發明安全注射器，是將具有可塑㈣之 5 ㈣件與㈣件直接㈣成—體，不僅可達到密封目的， 且可達到製造組配容易、提昇產能 '降低成本之功效，故 確實能達到本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本發明申請專利 範圍及發明說明書内容所作之簡單的等效變化與修飾 10 應仍屬本發明專利涵蓋之範圍内。 【圈式簡單說明】 圖1是現有一種安全注射器的立體分解圖； 圖2是該種安全注射器的組合剖面圖； 目3是-平面分解圖，說明本發明安全注射器的一第 15 一較佳實施例； 圖4是沿圖2中之線4—4的刮面圖； …圖組合剖面圖，說明_卡合座單元與—針頭單 元連結後可組配在一注射筒内部； 圖6是-操作示意圖，說明操作一推桿且使一摔頭卡 20 合在卡合座單元内部； 圖7是另-操作示意圖’說明拉動推桿且使針體内縮 至注射筒内部的狀態； 圖8疋本發明-第二較佳實施例的卡合座單元平面 剖面圖； 15 1252116 圖9是本發明第二較實施例的操作示意圖，說明拉動 推桿且使針體内縮至注射筒内部的狀態； 圖1 0是本發明一第三較佳實施例的平面分解圖；及 圖1 1是本發明一第四較佳實施例卡合座單元的組 5 合剖面圖。 16 1252116 【圖式之主要元件代表符號簡單說明】 10 注射筒 245 抵止肩部 L 軸線 246 導引部 11 筒部 30 針頭單元 111 容室 31 針座 12 束管部 311 連結部 121 貫孔 312 卡環 13 抵止部 32 針體 14 環槽 33 蓋體 20 卡合座單元 40 推桿 21 套筒件 41 桿部 22 密封件 42 活塞 23 外套體 43 榫頭 231 盤部 20， 卡合座單元 232 圓管部 24， 内套體 233 外周面 24Γ 内環面 234 内周面 242’ 第一卡合部 235 流道 244’ 容置部 236 支撐塊 245’ 傾斜肩部 24 内套體 L， 斜轴線 241 内環面 247’ 斜孔 242 第一卡合部 10” 注射筒 243 第二卡合部 11Γ 容室 244 容置部 13” 抵止部 17 1252116 20，， 卡合座單元 242” 卡合部 30，， 針體 244” 容置部 40，， 推桿 25” 針座 21，， 套筒件 30” 針體 22，， 密封件 50 卡合座單 23，， 外套體 54 内套體 231” 盤部 541 内環面 232” 圓管部 542 卡合部 233” 外周面 544 容置部 234” 内周面 545 傾斜肩部 235” 流道 547 斜孔 24，， 内套體 60 針體 241” 内環面 1810 When moving outside (can be used, the body iR star force is released, and the inner sleeve is used: the material characteristics of the original body 24 that is extruded outwards on one side, and the inclined hole 247, 倾ίο 15 20 =32^ When the inside of the syringe 1Q is inside, the whole body is deflected (at this time, the pressing action of the hole 427 of the boring head 43 is deformed and plasticized by the boring head 43 and the distal end of the needle body 32 can be abutted against the abutting portion 13, and then broken. By pushing 40, it is ensured that there is no danger to the needle body 32. As shown in Fig. 10, a third embodiment of the safety syringe of the present invention, j contains a syringe UP, which is mounted on the syringe 1Q, The inner engaging seat is 2", a needle 30" fixed in the engaging seat λ 20", and a needle inserted in the syringe 1. The inner pusher 40" The injection door 1〇 and push #40 are identical to the first embodiment, and therefore will not be described again. The following is only for the engagement seat unit 2〇” and the needle body 3〇, and the description: _ the engagement seat The unit 20" has a sleeve member 21, a sealing member 22 directly formed and sighed on the side sleeve member 21, ', and a needle holder 25 integrally formed with the sleeve member 21" The sleeve member 21 has an outer sleeve body 23 made of a hard plastic material and an inner sleeve body 24" fixed inside the outer sleeve body 23" and made of a plastically elastic material. The outer sleeve body 23 "having a disk portion 231" that can resist against the abutment portion 13", a circular tube portion 232 having a smaller circular diameter protruding from a side surface 13 1252116 ίο 15 20 of the disk portion 231", - an outer peripheral surface 233" surrounding the axis L and corresponding to the disk portion, and - an inner peripheral surface 234" disposed opposite to the outer peripheral surface, the disk portion 231, which is provided with a plurality of flows in the radial direction The inner sleeve body 24" has an inner ring surface 241 formed around the shaft and the wire, and the inner ring surface 241" has a snap-fit adjacent to the chamber (1) and protruding toward the axis L. The portion 242 ′′, is disposed on the engaging portion 242 ′, and is disposed away from the engaging portion 242 ′′ away from the accommodating portion 244 ′′ of the axis L. The sealing member 22 is made of rubber material, The direct agency is in the flow channel 235, and the outer ring material is protruded on the outer circumference 2 233", and the inner ring portion is integrally connected with the inner sleeve body 24, and the sealing member 22 The outer diameter of the outer diameter of the sleeve is larger than that of the corresponding outer sleeve 23, and the outer needle is 30 疋 directly fixed to the needle holder 25 of the engaging seat unit, and can be protruded to The syringe 10 is external. The third embodiment of the present invention integrates the sleeve member 21", the sealing member 22" and the needle holder 25", thereby reducing the number of components and reducing manufacturing and assembly. Trouble, and only need to insert the needle 3G into the needle seat 25" 7 assembly" is quite easy to operate. And the main syringe ☆ needle seat needs to be opposite to the engagement seat Rotation can be screwed together, ° this ^ clear has achieved the purpose of the reduction of components, assembly procedures. The fourth embodiment of the present invention is substantially the same as the third embodiment, and the difference is that the inner ring surface 541 of the inner sleeve body 54 of the engaging seat unit 50 also has a gap therebetween. The portion 542 and the accommodating portion 544 are inclined and inclined, and the engaging portion 542 is provided with a | u Γ ^ d scoop hole 547 which is generated around an oblique axis L'. And the oblique axis L intersects perpendicularly with the inclined shoulders 545 14 1252116. When the engaging seat unit 50 and the needle body 60 are retracted into the inside of the syringe, the needle body 60 can be ensured that there is no risk of exposure (similar to the shape of FIG. 9. In summary, the safety syringe of the present invention will have a plastic (4) 5 (4) Parts and (4) parts directly (4) into the body, not only can achieve the purpose of sealing, and can achieve the effect of easy assembly and increase productivity, and reduce the cost, so it can achieve the purpose of the invention. The preferred embodiments of the present invention are not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications 10 of the scope of the present invention and the description of the invention should still be covered by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view of a conventional safety syringe; Fig. 2 is a sectional view showing the combination of the safety syringe; and Fig. 3 is a plan exploded view showing a fifteenth of the safety syringe of the present invention. Figure 4 is a plan view of the scraping surface taken along line 4-4 of Figure 2; Fig. 4 is a sectional view showing the combination of the engaging unit and the needle unit. Figure 6 is a schematic view of the operation, illustrating the operation of a push rod and the fitting of a head card 20 into the interior of the engaging seat unit; Figure 7 is a schematic view of the operation - illustrating the pulling of the push rod and retracting the needle body to the syringe Figure 8 is a plan sectional view of the engaging seat unit of the second preferred embodiment; 15 1252116 Figure 9 is a schematic view showing the operation of the second comparative embodiment of the present invention, illustrating pulling the push rod and making the needle body Figure 10 is a plan exploded view of a third preferred embodiment of the present invention; and Figure 11 is a sectional view of a group 5 of a card seat unit according to a fourth preferred embodiment of the present invention. 16 1252116 [Simplified description of the main components of the drawings] 10 syringe 245 abutment shoulder L axis 246 guide 11 cylinder 30 needle unit 111 chamber 31 needle holder 12 tube portion 311 joint portion 121 through hole 312 Retaining ring 13 abutting portion 32 Needle body 14 Ring groove 33 Cover body 20 Clamping seat unit 40 Push rod 21 Sleeve member 41 Rod portion 22 Sealing member 42 Piston 23 Jacket 43 Shantou 231 Disc portion 20, Clamping seat unit 232 round tube portion 24, inner sleeve body 23 3 outer peripheral surface 24Γ inner annular surface 234 inner peripheral surface 242' first engaging portion 235 flow passage 244' accommodating portion 236 support block 245' inclined shoulder portion 24 inner sleeve L, oblique axis 241 inner annular surface 247' oblique Hole 242 first engaging portion 10" syringe 243 second engaging portion 11 容 chamber 244 accommodating portion 13" abutting portion 17 1252116 20, engaging seat unit 242" engaging portion 30, needle 244" The accommodating portion 40, the push rod 25", the needle holder 21, the sleeve member 30", the needle body 22, the sealing member 50, the seat block 23, the outer sleeve body 231", the inner portion 232 of the disk portion 541 "Circular portion 542 engaging portion 233" outer peripheral surface 544 receiving portion 234" inner peripheral surface 545 inclined shoulder portion 235" flow passage 547 oblique hole 24, inner sleeve body 60 needle body 241" inner annular surface 18